典型文献
Microcellular foamed polyamide 6/carbon nanotube composites with superior electromagnetic wave absorption
文献摘要：
Electromagnetic(EM)wave pollution causing damage to precision equipment and threatening the health of living organisms has attracted considerable attention.Herein,promising microcellular foamed polyamide 6(PA6)/carbon nanotube(CNT)composites for highly efficient EM wave absorption were suc-cessfully fabricated using supercritical CO2 foaming.Nanocomposites foams with a void fraction ranging from 38.7％to 85.1％were achieved,providing a platform to assess the correlation of the electrical con-ductivity,the dielectric permittivity and the EM wave absorption properties with porosity.Notably,the Foam-257.5C sample with a void fraction of 38.7％exhibited outstanding EM wave absorption characteris-tics at a thickness of only 1.59 mm and an ultra-low reflection loss value of-55.3 dB(99.9997％wave ab-sorption).Most importantly,the effective absorption bandwidth(EAB)of the Foam-257.5C sample could cover the entire Ku band(12.4-18 GHz)by slightly adjusting the thickness from 1.20 to 1.60 mm.The superior EM wave absorption performance of the Foam-257.5C sample was attributed to multiple reflec-tions and scattering at the solid-gas interfaces,favorable impedance matching due to the existence of a large polymer-air interface area,conductive loss near the interfaces and interfacial polarization.Thus,this study offers an eco-friendly,simple and versatile methodology to develop high-efficiency,flexible polymer-based EM wave absorbents.
文献关键词：
中图分类号：
作者姓名：
Menglong Xu;Linfeng Wei;Li Ma;Jiawei Lu;Tao Liu;Ling Zhang;Ling Zhao;Chul B.Park
作者机构：
State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;Department of Mechanical and Industrial Engineering,University of Toronto,5 King's College Road,Toronto,Ontario M5S 3G8,Canada;Shanghai Engineering Research Center of Hierarchical Nanomaterials,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China
文献出处：
引用格式：
[1]Menglong Xu;Linfeng Wei;Li Ma;Jiawei Lu;Tao Liu;Ling Zhang;Ling Zhao;Chul B.Park-.Microcellular foamed polyamide 6/carbon nanotube composites with superior electromagnetic wave absorption)[J].材料科学技术（英文版）,2022(22):215-224
A类：
Microcellular,microcellular
B类：
foamed,polyamide,carbon,nanotube,superior,electromagnetic,wave,absorption,Electromagnetic,EM,pollution,causing,damage,precision,equipment,threatening,health,living,organisms,has,attracted,considerable,attention,Herein,promising,PA6,CNT,highly,efficient,were,suc,cessfully,fabricated,supercritical,foaming,Nanocomposites,foams,void,fraction,ranging,from,achieved,providing,platform,assess,correlation,electrical,ductivity,dielectric,permittivity,properties,porosity,Notably,Foam,5C,sample,exhibited,outstanding,characteris,tics,thickness,only,ultra,low,reflection,loss,value,dB,Most,importantly,effective,bandwidth,EAB,could,cover,entire,Ku,GHz,by,slightly,adjusting,performance,was,attributed,multiple,tions,scattering,solid,gas,interfaces,favorable,impedance,matching,due,existence,large,polymer,air,area,conductive,near,interfacial,polarization,Thus,this,study,offers,eco,friendly,simple,versatile,methodology,develop,efficiency,flexible,absorbents
AB值：
0.622363
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